Well I just chickened out!...
I changed it to the c5622-070..
From the c5633-075..
After one more double check with the cometic tech line and it didn't sound like some pimply face kid like the Holley tech line.. they wanted 30 to 60 thousandths away from the piston...
What do you expect from someone who's too scared to hit the nitrous button...:(..